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  3. JE PISTONS 312125

JE PISTONS 312125 Fsr Crank Ls Engines 4.070 L8T 3.858

312125 Je Pistons Fsr 4.070 For L8t 3.858 Stroke Crank Ls Engines

( Brand: Je Pistons ), ( Manufacturer Part Number: 312125 ), ( Type: Piston ), ( Items Included: Piston Rings, Wrist Pin ), ( Piston Diameter: 4.070 )

Review JE PISTONS Fsr 4.070 L8t 3.858 Stroke Crank Ls Engines

JE Pistons 312125 FSR 4.070 for L8T 3.858 Crank LS Engines - High-Performance Forging

Experience unparalleled power and reliability with the JE Pistons 312125 FSR 4.070 for L8T 3.858 Crank LS Engines. This high-performance piston set is expertly engineered to deliver exceptional results, making it an ideal choice for those seeking to elevate their LS engine's capabilities.

The JE Pistons 312125 FSR 4.070 is a forged piston designed to fit L8T engines with a crankshaft dimension of 3.858 inches. The forged construction process ensures superior strength, durability, and consistent dimensions, which are essential for optimal engine performance.

Each piston features JE's proprietary FSR (Forged Shell Ring) design, which integrates the piston ring grooves into the piston body. This innovative design reduces tension on the piston rings, minimizing the chances of ring failure and promoting consistent ring seal. The FSR design also allows for the use of higher-quality materials in the ring grooves, enhancing performance and longevity.

The JE Pistons 312125 FSR 4.070 is optimized for 91 octane fuel and is designed to handle high horsepower applications. The piston's unique dome shape, combined with its low-friction skirt coating, ensures efficient combustion and reduced frictional losses, contributing to increased power output and improved fuel economy.

In addition, the piston's wrist pin bore features a high-quality, heat-treated, and nitrided pin boss. This ensures a precise fit for the piston's wrist pin, minimizing side-to-side play and promoting smooth engine operation.

When you choose the JE Pistons 312125 FSR 4.070 for your LS engine, you're investing in a product that combines advanced engineering, superior materials, and meticulous craftsmanship. This piston set is perfect for those looking to unleash the full potential of their LS engine, whether for street performance, drag racing, or road racing applications.

Upgrade your LS engine with the JE Pistons 312125 FSR 4.070 for L8T 3.858 Crank and experience the difference that high-quality, high-performance pistons can make.

Piston Model: Je Pistons 312125 FSR 4.070 for L8T 3.858 Crank LS Engines

Pros:

1. High Quality Material: Je pistons are known for their high-quality materials, ensuring durability and long-lasting performance.

2. Precision Manufacturing: The pistons are manufactured with high precision, ensuring a perfect fit and optimal engine performance.

3. Enhanced Engine Power: The pistons are designed to provide enhanced engine power and efficiency, making your LS engine more potent.

4. Reputable Brand: Je Pistons is a reputable brand in the automotive industry, giving confidence in the product's quality and performance.

Cons:

1. Price: High-quality pistons like Je's tend to be more expensive than standard aftermarket pistons.

2. Requires Professional Installation: Installing high-performance pistons like Je's requires professional skills and tools, which may incur additional costs.

3. Potential Engine Upgrades: If your LS engine is not upgraded to support higher power, these pistons may not deliver their full potential.

4. Risk of Engine Damage: If not properly installed or if the engine is not prepped correctly, there is a risk of engine damage.

Conclusion:

While Je Pistons 312125 FSR 4.070 for L8T 3.858 Crank LS Engines offers enhanced engine power and is made of high-quality materials, it comes with a higher price tag and requires professional installation. If you are looking to boost the performance of your LS engine and are willing to invest in a high-quality piston, then these pistons could be a good choice. However, ensure that your engine is prepared for the increased power and that the installation is done by a professional to minimize the risk of engine damage.

Recommendation:

If you are unsure about the compatibility of these pistons with your specific engine, consult a professional mechanic or the Je Pistons customer service before making a purchase. Also, consider your budget and the potential need for additional engine upgrades before deciding to purchase these pistons.

Details:

4.070 bore, and will work with a l8t 3.858 stroke crankshaft. They are still in good shape and ready to run. Selling a set of used Je fsr Pistons for ls engines. 1.1cc flat dome with 2 valve reliefs.

Connecting rods not included. They will also work with a 4.100 stroke and 6.125 rod. These were used for 300miles when a rod bearing slipped, necessitating tear down.

part #: 312125 prices

  • $949.04-$1239.66

specifications pistonringro:

  • brand: Je Pistons
  • mpn: 312125
  • type: Piston
  • items included: Piston Rings, Wrist Pin
  • piston diameter: 4.070

general pistonringro:

  • Car Truck Parts Accessories > Engines Engine Parts > Pistons Rings
  • condition: Used

shipping pistonringro:

  • type: Fixed
  • carrier: UPS
  • cost: $34.62
  • class: Economy
  • service: UPS Ground Saver
  • transit: 3-8 Days

offer pistonringro:

  • quantity: 1
  • sold: 0
  • best offers: True
  • started: May 27, 2025
  • options: Ship-to-home
  • availability: In Stock

payments pistonringro:

  • other
  • credit card: Visa
  • wallet: Paypal

seller pistonringro:

  • city: Justin, Texas
  • rating: 100.0%
  • # reviews: 238

returns pistonringro:

  • policy: No Returns
type: piston, items included: piston rings, wrist pin, piston diameter: 4.070,
category: auto parts > car truck parts accessories > engines engine parts > pistons rings, sku: 11914078045415502,
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5 offers $949.04–$1239.66 USD
  • New. Offer #1 priced at $949.04 + $0.00 shipping estimate = $949.04* total. JE Pistons Engine Piston Kit.FREE SHIPPING
  • New. Offer #2 priced at $949.99 + $0.00 shipping estimate = $949.99* total. ). Part Number: .FREE SHIPPING
  • New. Offer #3 priced at $1239.66 + $0.00 shipping estimate = $1239.66* total. PRODUCT INFO: - JE Pistons LS ASYM DM 4100STRKR Set of 8 Pistons - Engine: Chevrolet LS GEN III/IV - Bore Diameter: 4.07 - Compression Height: 1. PRODUCT OVERVIEW: - JE Pistons asymmetrical FSR (Forged Side Relief) piston line incorporates modern forging design with a larger skirt on the major thrust side and smaller, friction-reducing skirt on the minor thrust side.FREE SHIPPING
  • New. Offer #4 priced at $1044.10 + $0.00 shipping estimate = $1044.10* total. The vendor part number is . Up for sale is JE Pistons LS ASYM DM 4100STRKR Set of 8 Pistons .FREE SHIPPING
  • New. Offer #5 priced at $949.99 + $0.00 shipping estimate = $949.99* total. Piston Series: JE Pistons JE Pistons .FREE SHIPPING

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